US4216381A - Structure for emission tomography scintillation camera - Google Patents

Structure for emission tomography scintillation camera Download PDF

Info

Publication number
US4216381A
US4216381A US06/037,661 US3766179A US4216381A US 4216381 A US4216381 A US 4216381A US 3766179 A US3766179 A US 3766179A US 4216381 A US4216381 A US 4216381A
Authority
US
United States
Prior art keywords
detector
frame
circular ring
patient
recited
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/037,661
Other languages
English (en)
Inventor
Kai Lange
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US06/037,661 priority Critical patent/US4216381A/en
Application granted granted Critical
Publication of US4216381A publication Critical patent/US4216381A/en
Publication of US4216381B1 publication Critical patent/US4216381B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/447—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to counterpoise or springs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/037—Emission tomography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
    • G01T1/2914—Measurement of spatial distribution of radiation
    • G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)

Definitions

  • the invention relates generally to imaging devices for detecting radiation distribution by a scintillation camera.
  • the invention relates particularly to a stand for adapting a conventional scintillation camera for emission computed axial tomography analysis of a patient.
  • a scintillation detector precesses in an orbit about a patient having an axis of precession corresponding to the cranial-caudal axis of the patient.
  • the scintillation detector head employs an array of photodetectors viewing overlapping portions of a scintillation crystal which is formed in the shape of a disk. Radiation impinging upon the crystal, which is typically formed of sodium iodide, causes flashes of light to be emitted which are detected by photomultiplier tubes viewing the area of emission. The photomultiplier tubes generate electrical signals proportional to the magnitude of the light intensity received.
  • a radiation detector In trans-axial tomographic scanning, a radiation detector is moved in an orbit about a subject of interest rotating to face the subject of interest at all times.
  • the subject of interest is a human patient and the orbit in which the radiation detector moves is a circular orbit in which the axis of the circle about which the detector precesses is referred to as the cranial-caudal axis.
  • the scintillation detector is always tangent to this circle.
  • a single precession of a scintillation camera detector about the patient produces an image showing the radioactive distribution in a plurality of section imaging planes, which are transverse planes that are mutually parallel and usually perpendicular to the cranial-caudal axis.
  • section imaging planes which are transverse planes that are mutually parallel and usually perpendicular to the cranial-caudal axis.
  • Gamma rays eminating both from within and from without these planes are detected.
  • Detected radiation producing scintillations in the crystal detector is associated by computational and storage means with the nearest section imaging plane.
  • the motion of the scintillation camera detector about the cranial-caudal axis is digitized and represented in electronic form in a computation means, such as a small computer.
  • the computer concurrently determines the distribution of radioactive events within a plurality of parallel section imaging planes typically having a thickness of about 2 centimeters.
  • the computed radioactive distribution is displayed on a visual image display device.
  • Precession continues for imaging in the section imaging plane until the scintillation detector has moved 360° about the cranial-caudal axis. In theory, a precession through only 180° would be practical, but precession through 360° is performed to minimize internal attenuation effects insofar as is possible. While precession of the detector is preferably, a continuous advancement through the detector orbit data registration within a particular imaging frame is performed in discrete counting intervals which are initiated and terminated in step-wise increments.
  • one object of the present invention is to provide a structure in which a conventional, counterbalanced scintillation camera can be used for emission tomography.
  • Another object of the present invention is to provide a structure in which a conventional, counterbalanced scintillation camera can be utilized for either emission tomography or conventional stationary radiation distribution analysis.
  • the invention is directed to a supporting structure for a scintillation camera.
  • the supporting structure allows a conventional, counterbalanced scintillation camera to be adapted for emission tomography analysis by rotating the detector in a circular orbit about a patient.
  • the structure includes a base having a pair of upright stanchions supporting an upright circular frame, which has a central, longitudinal axis.
  • the upright circular frame comprises an outer circular ring and a concentric inner circular wing adapted for concentric relative rotation.
  • An elongated frame pivotally supporting a detector at one end and having a counterweight at the other end is tiltably mounted within the inner circular ring of the circular frame.
  • the elongated frame is mounted at the general lateral axis of balance of the frame and includes a means for tilting the elongated frame relative to the central longitudinal axis of the upright circular frame.
  • the structure includes a drive system for rotating the elongated frame within the circular frame whereby the detector orbits the patient to receive emission data.
  • the data is digitized and processed in electronic form. Using an appropriate algorithm, the computed radiographic distribution is constructed and is then displayed on a visual image display device.
  • FIG. 1 is a perspective view of a patient undergoing analysis by a scintillation camera incorporating the present invention.
  • FIG. 2 is a partially cut-away perspective view showing the bearing support and drive system for the structure shown in FIG. 1.
  • FIG. 1 there is shown a patient 10 undergoing examination by an emission tomography camera system 12, while being supported by a cantilevered table 14.
  • the patient 10 receives an internal dose of radiopharmaceutical compounds which emit gamma ray energy.
  • the gamma ray energy is detected by a detector 16 for imaging internal portions of the patient.
  • the detector 16 contains scintillation crystals, photomultiplier tubes, and lead shielding which perform in a well known manner to detect the precise location of the emissions from the patient.
  • a structure for supporting the detector 16 and for rotating the detector in a circular orbit around the patient.
  • the structure includes a base, 18, having upright stanchions 20 and 22 extending vertically therefrom and supporting an upright circular frame 24.
  • the upright circular frame comprises an outer circular ring 26 and a concentric inner circular ring 28 adapted for concentric relative rotation.
  • the inner circular ring supports an elongated frame 30 at trunions 32.
  • the elongated frame 30 pivotally supports the detector head 16 at trunions 34 and has a counterweight 36 at the opposite end.
  • the frame 30 is positioned generally at the lateral axis of balance between the detector head and the counterweight so that the detector head can be easily tilted to a desired position.
  • Trunions 32 and 34 are each adapted with a releasable electromagnetic brake, which is controlled by an actuator 38 on handle 40.
  • the actuator releases the brake and allows the detector head to be pivoted within trunions 34 and the frame 30 to be tilted within trunions 32 for the desired position relative to the patient 10.
  • Trunions 32 and 34 include a graduated 360° index (not shown) to facilitate the positioning of the detector relative to the patient.
  • the patient 10 is generally positioned along the central longitudinal axis of the circular frame 24.
  • the detector 16 is carefully positioned so that it is close to the patient and is tangent to the orbital path without interferring with the patient or the table.
  • a drive system 42 provides the means for rotating the elongated frame 30 within circular frame 24 by rotating the inner ring 28 relative to the outer ring 26.
  • the drive system is carefully controlled so that the detector will be advanced an incremental step while the emission data is being accumulated.
  • the detector is advanced through 128 evenly spaced increments during a 360° orbit of the patient. In other examples, the detector could slowly rotate continuously about the patient or could be advanced at any number of specific positions for a specific analysis.
  • the angular position of the detector is encoded to correlate with the emission data, as will be described later.
  • the detected radiation producing scintillations in the detector is associated by well known computational and storage means (not shown) with the nearest section imaging plane.
  • the encoded position of the detector is also digitized and processed in the computational and storage means. An appropriate and well known algorithm is used to reconstruct the data for display on a conventional visual image display device (not shown).
  • a suitable drive system is provided by a motor 44 operating through an electromagnetic clutch 46, controlling a drive gear 48.
  • Drive gear 48 engages a spur gear 50 which actuates four drive rollers 52.
  • the drive rollers 52 engage the outer periphery of inner circular ring 28 to rotate the detector around the patient.
  • the inner circular ring 28 is stabilized within the outer ring 26 by 3 sets of stabilizing rollers indicated by roller axes 54 evenly spaced at 120° increments around the circular frame.
  • a guide roller 56 is positioned to engage a forward circumferential flange 58 on the inner circular ring 28.
  • a guide roller 60 is positioned to engage a rear circumferential flange 62 on the innner ring.
  • Eccentric rollers 64 are mounted on shafts 65 and are similarly positioned to engage circumferential flanges on the inner surface of outer ring 26 to precisely stabilize the concentric rings of the upright circular frame.
  • Inner circular ring 28 includes a continuous series of alternate light and dark portions 66 on the outer periphery.
  • the outer ring 26 includes photodiodes 68 adapted to respond to the light and dark portions of the inner ring which pass the photodiodes and thereby encode the position of the detector by conventional circuitry to the control system.
  • the encoded position can be used for correlating the emission data and for controlling the advancement of the drive system 42.
  • a primary advantage of the structure is the efficient and inexpensive adaptation of the conventional scintillation camera into an emission tomography camera.
  • An additional advantage is that the structure allows the detector to also be positioned for conventional emission analysis for efficient utilization of the device.
  • the control system deactivates the drive system and the data is compiled and displayed in the conventional manner.
  • the actuator 38 is pressed which releases the electromagnetic brakes in trunions 32, 34, and in the electromagnetic clutch 46. The detector head 16 is then free to be positioned and the release of the actuator will fix the detector in the desired position.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Nuclear Medicine (AREA)
US06/037,661 1979-05-10 1979-05-10 Structure for emission tomography scintillation camera Expired - Lifetime US4216381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/037,661 US4216381A (en) 1979-05-10 1979-05-10 Structure for emission tomography scintillation camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/037,661 US4216381A (en) 1979-05-10 1979-05-10 Structure for emission tomography scintillation camera

Publications (2)

Publication Number Publication Date
US4216381A true US4216381A (en) 1980-08-05
US4216381B1 US4216381B1 (enrdf_load_stackoverflow) 1988-09-27

Family

ID=21895592

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/037,661 Expired - Lifetime US4216381A (en) 1979-05-10 1979-05-10 Structure for emission tomography scintillation camera

Country Status (1)

Country Link
US (1) US4216381A (enrdf_load_stackoverflow)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066917A1 (en) * 1981-05-29 1982-12-15 Koninklijke Philips Electronics N.V. Gamma tomography apparatus comprising a parallelogram suspension system
DE3221955A1 (de) * 1981-06-15 1982-12-30 Siemens AG, 1000 Berlin und 8000 München Halte- und bewegungsvorrichtung fuer einen detektorkopf eines strahlungsdetektors
US4368389A (en) * 1980-06-26 1983-01-11 Blum Alvin S Photon emission tomographic apparatus and method
US4400620A (en) * 1980-06-26 1983-08-23 Blum Alvin S Photon emission tomographic apparatus
US4409484A (en) * 1981-09-28 1983-10-11 Technicare Corporation Brake assembly for rotatable scintillation detector
US4426578A (en) 1980-10-08 1984-01-17 Technicare Corporation Support structure for rotatable scintillation detector
USD272386S (en) 1981-05-04 1984-01-24 Technicare Corporation Rectangular gamma camera head with collimator
US4438335A (en) 1981-09-02 1984-03-20 Siemens Gammasonics, Inc. Detector head mounting apparatus
USD273981S (en) 1981-08-11 1984-05-22 Technicare Corporation Rectangular gamma camera head with collimator
USD273982S (en) 1981-08-11 1984-05-22 Technicare Corporation Square gamma camera head with collimator
US4476389A (en) * 1980-09-17 1984-10-09 Tokyo Shibaura Denki Kabushiki Kaisha Emission type computed tomography apparatus
US4503331A (en) * 1982-04-21 1985-03-05 Technicare Corporation Non-circular emission computed tomography
DE3521293A1 (de) * 1984-06-18 1985-12-19 Technicare Corp., Solon, Ohio Verfahren zur korrektur der raeumlichen messwerte einer drehbaren (gamma)-kamera
US4578585A (en) * 1983-11-25 1986-03-25 Siemens Gammasonics, Inc. Detector head mounting mechanism
US4580219A (en) * 1983-05-02 1986-04-01 General Electric Company Method for reducing image artifacts due to projection measurement inconsistencies
US4590378A (en) * 1984-06-04 1986-05-20 Siemens Gammasonics, Inc. Counterbalanced radiation detection device
US4625116A (en) * 1985-03-29 1986-11-25 Siemens Gammasonics, Inc. Structure for supporting a detector head
US4645933A (en) * 1983-07-29 1987-02-24 Picker International, Inc. Emissive computed tomography
EP0109091A3 (en) * 1982-11-16 1987-03-04 Kabushiki Kaisha Toshiba Scintillation camera apparatus
US4652758A (en) * 1984-06-04 1987-03-24 General Electric Company Nuclear imaging tomography
DE3609724C1 (en) * 1986-03-21 1987-04-23 Siemens Ag Supporting and drive device for a detector head
US4692625A (en) * 1985-06-24 1987-09-08 Siemens Gammasonics, Inc. Detector head mounting mechanism and supporting structure
DE8800985U1 (de) * 1988-01-28 1988-08-25 Dornier Medizintechnik GmbH, 8034 Germering Mehrzweck-Lithotripter
US4774412A (en) * 1985-12-03 1988-09-27 Kabushiki Kaisha Toshiba Scintillation camera system
US5359198A (en) * 1989-07-28 1994-10-25 Sopha Medical Scintillation device usable for measuring attenuation through transmission tomography
US5554848A (en) * 1990-11-02 1996-09-10 Elscint Ltd. Gantry for nuclear medicine imaging systems
US5670783A (en) * 1996-02-15 1997-09-23 Picker International, Inc. Automated detector balance
US5760402A (en) * 1996-06-07 1998-06-02 Adac Laboratories Dual-head medicine imaging system with cantilevered detector heads
US5777332A (en) * 1996-08-13 1998-07-07 General Electric Company Automatic patient alignment during nuclear imaging body contour tomography scans
US5811813A (en) * 1990-12-06 1998-09-22 Elscint Ltd. Dual detector gamma camera system
US6044504A (en) * 1997-08-01 2000-04-04 Is2 Research, Inc. Patient support for a scintillation camera
US6150662A (en) * 1998-04-30 2000-11-21 Adac Laboratories Gantry for medical imaging system
US6184530B1 (en) 1991-05-23 2001-02-06 Adac Laboratories Adjustable dual-detector image data acquisition system
USRE37474E1 (en) 1991-05-23 2001-12-18 Adac Laboratories Adjustable dual-detector image data acquisition system
JP3415189B2 (ja) 1992-03-31 2003-06-09 ゼネラル・エレクトリック・カンパニイ 患者の動きを補正する装置
US20120241638A1 (en) * 2011-03-23 2012-09-27 Elekta Ab (Publ) Apparatus for the extension and retraction of a peripheral device
CN106924887A (zh) * 2015-12-31 2017-07-07 上海联影医疗科技有限公司 一种医疗设备
CN107102012A (zh) * 2016-02-22 2017-08-29 莫福探测仪器有限责任公司 用于计算机断层扫描系统的开放式鼓形机架
CN107536618A (zh) * 2016-06-29 2018-01-05 合肥美亚光电技术股份有限公司 X射线成像装置及其探测器偏转机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735132A (en) * 1970-10-16 1973-05-22 Raytheon Co Radiographic display system
US3983399A (en) * 1975-03-18 1976-09-28 Picker Corporation Tomography system having axial scanning
US4057726A (en) * 1975-12-22 1977-11-08 G. D. Searle & Co. Collimator trans-axial tomographic scintillation camera
US4057727A (en) * 1976-10-22 1977-11-08 G. D. Searle & Co. Positron imaging system with improved count rate and tomographic capability
US4066902A (en) * 1974-03-23 1978-01-03 Emi Limited Radiography with detector compensating means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735132A (en) * 1970-10-16 1973-05-22 Raytheon Co Radiographic display system
US4066902A (en) * 1974-03-23 1978-01-03 Emi Limited Radiography with detector compensating means
US3983399A (en) * 1975-03-18 1976-09-28 Picker Corporation Tomography system having axial scanning
US4057726A (en) * 1975-12-22 1977-11-08 G. D. Searle & Co. Collimator trans-axial tomographic scintillation camera
US4057727A (en) * 1976-10-22 1977-11-08 G. D. Searle & Co. Positron imaging system with improved count rate and tomographic capability

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368389A (en) * 1980-06-26 1983-01-11 Blum Alvin S Photon emission tomographic apparatus and method
US4400620A (en) * 1980-06-26 1983-08-23 Blum Alvin S Photon emission tomographic apparatus
US4476389A (en) * 1980-09-17 1984-10-09 Tokyo Shibaura Denki Kabushiki Kaisha Emission type computed tomography apparatus
US4426578A (en) 1980-10-08 1984-01-17 Technicare Corporation Support structure for rotatable scintillation detector
USD272386S (en) 1981-05-04 1984-01-24 Technicare Corporation Rectangular gamma camera head with collimator
US4459485A (en) * 1981-05-29 1984-07-10 U.S. Philips Corporation Gamma tomography apparatus comprising a parallelogram suspension system
EP0066917A1 (en) * 1981-05-29 1982-12-15 Koninklijke Philips Electronics N.V. Gamma tomography apparatus comprising a parallelogram suspension system
DE3221955A1 (de) * 1981-06-15 1982-12-30 Siemens AG, 1000 Berlin und 8000 München Halte- und bewegungsvorrichtung fuer einen detektorkopf eines strahlungsdetektors
US4417143A (en) * 1981-06-15 1983-11-22 Siemens Gammasonics, Inc. Apparatus for driving a radiation detector
USD273981S (en) 1981-08-11 1984-05-22 Technicare Corporation Rectangular gamma camera head with collimator
USD273982S (en) 1981-08-11 1984-05-22 Technicare Corporation Square gamma camera head with collimator
US4438335A (en) 1981-09-02 1984-03-20 Siemens Gammasonics, Inc. Detector head mounting apparatus
US4409484A (en) * 1981-09-28 1983-10-11 Technicare Corporation Brake assembly for rotatable scintillation detector
US4503331A (en) * 1982-04-21 1985-03-05 Technicare Corporation Non-circular emission computed tomography
EP0109091A3 (en) * 1982-11-16 1987-03-04 Kabushiki Kaisha Toshiba Scintillation camera apparatus
US4580219A (en) * 1983-05-02 1986-04-01 General Electric Company Method for reducing image artifacts due to projection measurement inconsistencies
US4645933A (en) * 1983-07-29 1987-02-24 Picker International, Inc. Emissive computed tomography
US4578585A (en) * 1983-11-25 1986-03-25 Siemens Gammasonics, Inc. Detector head mounting mechanism
EP0164626A3 (en) * 1984-06-04 1987-04-01 General Electric Company Nuclear imaging tomography
US4652758A (en) * 1984-06-04 1987-03-24 General Electric Company Nuclear imaging tomography
US4590378A (en) * 1984-06-04 1986-05-20 Siemens Gammasonics, Inc. Counterbalanced radiation detection device
US4582995A (en) * 1984-06-18 1986-04-15 Technicare Corporation Spatial registration correction for rotational gamma cameras
NL8501700A (nl) * 1984-06-18 1986-01-16 Technicare Corp Werkwijze en inrichting voor het corrigeren van de ruimtelijke uitlijning bij rotatie gammacamera's.
DE3521293A1 (de) * 1984-06-18 1985-12-19 Technicare Corp., Solon, Ohio Verfahren zur korrektur der raeumlichen messwerte einer drehbaren (gamma)-kamera
US4625116A (en) * 1985-03-29 1986-11-25 Siemens Gammasonics, Inc. Structure for supporting a detector head
US4692625A (en) * 1985-06-24 1987-09-08 Siemens Gammasonics, Inc. Detector head mounting mechanism and supporting structure
US4774412A (en) * 1985-12-03 1988-09-27 Kabushiki Kaisha Toshiba Scintillation camera system
DE3609724C1 (en) * 1986-03-21 1987-04-23 Siemens Ag Supporting and drive device for a detector head
DE8800985U1 (de) * 1988-01-28 1988-08-25 Dornier Medizintechnik GmbH, 8034 Germering Mehrzweck-Lithotripter
US5359198A (en) * 1989-07-28 1994-10-25 Sopha Medical Scintillation device usable for measuring attenuation through transmission tomography
US5554848A (en) * 1990-11-02 1996-09-10 Elscint Ltd. Gantry for nuclear medicine imaging systems
US5811813A (en) * 1990-12-06 1998-09-22 Elscint Ltd. Dual detector gamma camera system
USRE37474E1 (en) 1991-05-23 2001-12-18 Adac Laboratories Adjustable dual-detector image data acquisition system
US6184530B1 (en) 1991-05-23 2001-02-06 Adac Laboratories Adjustable dual-detector image data acquisition system
JP3415189B2 (ja) 1992-03-31 2003-06-09 ゼネラル・エレクトリック・カンパニイ 患者の動きを補正する装置
US5670783A (en) * 1996-02-15 1997-09-23 Picker International, Inc. Automated detector balance
US5760402A (en) * 1996-06-07 1998-06-02 Adac Laboratories Dual-head medicine imaging system with cantilevered detector heads
US5777332A (en) * 1996-08-13 1998-07-07 General Electric Company Automatic patient alignment during nuclear imaging body contour tomography scans
US6255656B1 (en) 1997-08-01 2001-07-03 Is2 Research Inc. Positioner for a scintillation camera detector head
US6288398B1 (en) 1997-08-01 2001-09-11 Is2 Research Inc. Support structure for medical diagnostic equipment
US6044504A (en) * 1997-08-01 2000-04-04 Is2 Research, Inc. Patient support for a scintillation camera
US6150662A (en) * 1998-04-30 2000-11-21 Adac Laboratories Gantry for medical imaging system
US20120241638A1 (en) * 2011-03-23 2012-09-27 Elekta Ab (Publ) Apparatus for the extension and retraction of a peripheral device
US8354649B2 (en) * 2011-03-23 2013-01-15 Elekta Ab (Publ) Apparatus for the extension and retraction of a peripheral device
CN106924887A (zh) * 2015-12-31 2017-07-07 上海联影医疗科技有限公司 一种医疗设备
CN106924887B (zh) * 2015-12-31 2020-12-01 上海联影医疗科技股份有限公司 一种医疗设备
CN107102012A (zh) * 2016-02-22 2017-08-29 莫福探测仪器有限责任公司 用于计算机断层扫描系统的开放式鼓形机架
CN107536618A (zh) * 2016-06-29 2018-01-05 合肥美亚光电技术股份有限公司 X射线成像装置及其探测器偏转机构
CN107536618B (zh) * 2016-06-29 2020-05-15 合肥美亚光电技术股份有限公司 X射线成像装置及其探测器偏转机构

Also Published As

Publication number Publication date
US4216381B1 (enrdf_load_stackoverflow) 1988-09-27

Similar Documents

Publication Publication Date Title
US4216381A (en) Structure for emission tomography scintillation camera
US6180943B1 (en) Tomograph acquisition apparatus having a pair of rotatable scintillation detectors which form detection fields at an angle of inclination relative to each other
US7291841B2 (en) Device and system for enhanced SPECT, PET, and Compton scatter imaging in nuclear medicine
US7375337B2 (en) Constant radius single photon emission tomography
US5534701A (en) Tomographic acquisition method having two detectors with sighting center distinct from the center of rotation
US4031395A (en) Radiography
US20030209662A1 (en) Device and system for improved imaging in nuclear medicine {and mammography}
JPH1039032A (ja) ガンマカメラシステム
JP2003121549A (ja) 核医学診断装置
US20030205675A1 (en) Device and system for improved [compton scatter] imaging in nuclear medicine {and mammography}
US7297956B2 (en) Methods and apparatus for small footprint imaging system
JPS6333108B2 (enrdf_load_stackoverflow)
EP1132756A2 (en) Transmission radiation corrected gamma camera
JPS5953055B2 (ja) 医療用放射線写真装置
US4138611A (en) Fan beam CT apparatus with post-processing weighting of picture element signals
US4774411A (en) Gamma tomography apparatus
US5367169A (en) Gamma camera with two opposite detectors having independent radial movements
US4514632A (en) Modular scintillation camera
US20040021083A1 (en) Device and system for improved Compton scatter imaging in nuclear medicine {and mammography}
US5278416A (en) Tomographic gamma camera provided with a swivelling detector
US4845747A (en) Apparatus for measuring density of vertebrae or the like
EP0013931B1 (en) Emission computed tomograph
US4114040A (en) Radiography
US5739540A (en) Nuclear medicine diagnostic apparatus
JPS6145792B2 (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
RR Request for reexamination filed

Effective date: 19871015

B1 Reexamination certificate first reexamination